402826028 has 48 divisors (see below), whose sum is σ = 797948928. Its totient is φ = 176280000.

The previous prime is 402826027. The next prime is 402826057. The reversal of 402826028 is 820628204.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 402825985 and 402826003.

It is not an unprimeable number, because it can be changed into a prime (402826027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308978 + ... + 310278.

It is an arithmetic number, because the mean of its divisors is an integer number (16623936).

Almost surely, 2^402826028 is an apocalyptic number.

It is an amenable number.

402826028 is a deficient number, since it is larger than the sum of its proper divisors (395122900).

402826028 is a wasteful number, since it uses less digits than its factorization.

402826028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574 (or 1572 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 402826028 is about 20070.5263508459. The cubic root of 402826028 is about 738.5374252932.

The spelling of 402826028 in words is "four hundred two million, eight hundred twenty-six thousand, twenty-eight".